LINQ to SQL - How to select specific columns and return strongly typed list

I'm trying to use LINQ to SQL to select a few specific columns from a table and return the result as a strongly typed list of objects.

For Example:

var result = (from a in DataContext.Persons
                              where a.Age > 18
                              select new Person
                              {
                                  Name = a.Name,
                                  Age = a.Age
                              }
                              ).ToList();

Any help would be greatly appreciated.

It builds fine, but when I run it, I get the error. Explicit construction of entity type MyEntity in query is not allowed.